According to a release issued this morning, the free service will be ad-supported, offered by RMT Free Phone and will be available at more than 200 land-line phones throughout Jeppesen Terminal and all three concourses.

The phones will allow free unlimited domestic calls. International calls will be free for the first 10 minutes. Beyond that: it will be $0.25 per minute and 15 percent tax.

What’s the catch? To support the service, the phones have high definition 17-inch LCD screens that will show digital advertising and run over Voice over IP.

“This new technology allows advertisers to promote their products airport-wide with 15-second digital advertisements and offers customers digital coupons via QR codes as well as opt-in SMS-advertising,” according to the release.